CN107032517A - Modified coral sand is used for the method for Island engineering Water warfare - Google Patents
Modified coral sand is used for the method for Island engineering Water warfare Download PDFInfo
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- CN107032517A CN107032517A CN201611083458.3A CN201611083458A CN107032517A CN 107032517 A CN107032517 A CN 107032517A CN 201611083458 A CN201611083458 A CN 201611083458A CN 107032517 A CN107032517 A CN 107032517A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
- B01J20/12—Naturally occurring clays or bleaching earth
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
- B01J20/14—Diatomaceous earth
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
- B01J20/28002—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their physical properties
- B01J20/28009—Magnetic properties
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
- B01J20/28014—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their form
- B01J20/28016—Particle form
- B01J20/28021—Hollow particles, e.g. hollow spheres, microspheres or cenospheres
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2220/00—Aspects relating to sorbent materials
- B01J2220/40—Aspects relating to the composition of sorbent or filter aid materials
- B01J2220/48—Sorbents characterised by the starting material used for their preparation
- B01J2220/4806—Sorbents characterised by the starting material used for their preparation the starting material being of inorganic character
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2220/00—Aspects relating to sorbent materials
- B01J2220/40—Aspects relating to the composition of sorbent or filter aid materials
- B01J2220/48—Sorbents characterised by the starting material used for their preparation
- B01J2220/4812—Sorbents characterised by the starting material used for their preparation the starting material being of organic character
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2220/00—Aspects relating to sorbent materials
- B01J2220/40—Aspects relating to the composition of sorbent or filter aid materials
- B01J2220/48—Sorbents characterised by the starting material used for their preparation
- B01J2220/4875—Sorbents characterised by the starting material used for their preparation the starting material being a waste, residue or of undefined composition
- B01J2220/4881—Residues from shells, e.g. eggshells, mollusk shells
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/08—Seawater, e.g. for desalination
Abstract
The present invention relates to a kind of method that modified coral sand is used for Island engineering Water warfare, methods described step is as follows：（1）Pretreatment；（2）Purification：Step（1）Pretreated coastal seawater, which is pumped into filtration tank, the filtration tank, is filled with modified coral sand filler, and pretreated coastal seawater is purified through the filling adsorption in filtration tank, fully goes the removal of impurity, obtains Island engineering purified water.The present invention forms uniform dispersion using three kinds of raw materials are well mixed, for the modification of coral sand, in impregnation process, into the hole of coral sand, forms macropore（Coral sand）Inner sleeve aperture（Magnetic ordered mesoporous carbon or the order mesoporous nickel ferrite based magnetic loaded of magnetic）Three-dimensional pore structure, relative to the randomness of natural coral sand hole gap, in order, big aperture is in picturesque disorder for modified coral sand pore structure, for seawater cleaning processing, and adsorption storage effect is good, and impurity abjection is also allowed for during follow-up backwash.
Description
Technical field
The present invention relates to a kind of method that modified coral sand is used for Island engineering Water warfare.
Background technology
At present, water source used in seawater utilization, which is mainly in inshore seawater, coastal seawater, contains suspension, colloid and dissolving
Material, and the polluter such as also substantial amounts of organic matter, microorganism, bacterium, algae, are easily contaminated.Therefore, sea is carried out
The first step of water utilizing works is seawater cleaning.
In seawater cleaning technique, filtering is important step therein, is the critical process for ensureing effluent quality.In recent years
Come, the aggravation polluted with coastal seawater, traditional filtrate such as quartz sand, anthracite used in filter process is mostly only bright
Aobvious turbidity removal effect, because its surface is negatively charged, specific surface area is small, adsorption capacity is low, to the pollutant in seawater, such as
Nitrogen, phosphorus, the removal of organic matter seem unable to do what one wishes, and requirement of the seawater utilization to water quality can not have been met, and traditional filtrate faces sternly
High test.At present, modified filter material makes progress in fields such as sewage disposal, Water purification and precipitation runoff Water-quality controls,
A series of achievement is achieved in terms of preparating mechanism, adsorption mechanism, is beneficial to its popularization and application.But up to now, modifying agent
Mainly iron system, aluminium system, magnesium system, the oxide or hydrous oxide of manganese systems, and rare earth metal compound, and be in reality
Room conceptual phase is tested, still without good solution the problem of for existing in actual applications.
Coral sand is the product of coral polyp after death, and mineralogical composition is then aragonite or high-magnesian calcite, bulk density about 900
kg/m3, the kg/m of apparent density about 18003.Hole in coral sand includes intergranular outer hole and the inner pore of particle in itself,
Porosity 50%.It is coral sand light weight, porous for other construction materials, gathered materials on the spot on island, by coral sand
It is modified and prepares filtrate, for the purification of engineering on an island water, good purification, filtrate cost is low.
The content of the invention
It is an object of the invention to solve the deficiencies in the prior art there is provided a kind of modified coral sand for Island engineering
With the method for Water warfare.
Modified coral sand is used for the method for Island engineering Water warfare,
（1）Pretreatment：Nearly seawater is led to cistern, and the water-insoluble Portugal that addition stores seawater cumulative volume 1-2.5% mass gathers
Sugar, is stirred, and 6-8h is settled in normal temperature natural flocculation；
The water-insoluble glucan of macromolecule, has effects that to adsorb and flocculates（Frame is produced between coastal seawater pollutant
Bridge function, accelerates pollutant sedimentation）, meanwhile, the composition flocculated, the pre- place of flocculation can be difficult to Adsorption of Heavy Metals impurity and small molecule
Manage effect good, it is easy to operate；
（2）Purification：Step（1）Pretreated coastal seawater is pumped into filtration tank, the filtration tank and is filled with modified coral sand
Filler, pretreated coastal seawater is purified through the filling adsorption in filtration tank, fully goes the removal of impurity, obtains Island engineering
Use purified water；
The processing method of the modified coral sand filler is as follows：
（a）Coral sand is crushed, particle size range 0.6-0.8mm coral sand is chosen, removes visible foreign with seawater flushing, dry standby
With；
Hole in coral sand includes intergranular outer hole and the inner pore of particle in itself, porosity 50%.With respect to other
It is coral sand light weight, porous for material, gathered materials on the spot on island, coral sand is modified and prepares filtrate, for island work
The purification of journey water, good purification, filtrate cost is low, is found in present inventor's process of the test, using natural
Coral sand can realize a certain degree of purification of seawater, but because coral sand porosity is high and aperture is larger, after adsorbing contaminant
The function of storing impurity is weak, and impurity is easily again introduced into seawater in filter process, influences clean-up effect, therefore, the hair of the application
A person of good sense is modified to natural coral sand, further to improve adsorption capacity, while substantially improving the ability of storage impurity；
（b）Modifying agent is configured, the order mesoporous medium of magnetic, diatomite and organobentonite are well mixed, plus appropriate purified water
Stir, adjust pH value to 7.5-7.8 with sodium hydroxide, obtain modifying agent；
（c）By step（a）Coral sand input step（b）Modifying agent in modification, in stirring at normal temperature infiltrate 4-6 hours,
Sodium hydroxide maintenance system pH value 7.5-7.8 is added in impregnation process；
（d）Step（c）Coral sand after modification is normal in after 220-280 DEG C of high-temperature roasting 0.5-1h, being cooled to through draining
Temperature, i.e., load filtration tank as filler.
Magnetic ordered mesoporous carbon has huge specific surface area and abundant three dimensional pore structures, and high-specific surface area is conducive to
The adsorption storage of impurity, the abjection of impurity is carried when backwash processing is in regular orderly open duct, the aperture of size adjustable
Path is supplied；Diatomite has the advantages that porosity is big, absorbability is strong, chemical property is stable, and organobentonite has good
Thixotropy, chemical stability, dispersiveness, after the appropriate organobentonite of addition stirs, you can form stable disperse materials；
Uniform dispersion is formed by above-mentioned three kinds of raw materials are well mixed, for the modification of coral sand, in impregnation process, is entered
In the hole of coral sand, macropore is formed（Coral sand）Inner sleeve aperture（Magnetic ordered mesoporous carbon or the order mesoporous nickel ferrite based magnetic loaded of magnetic）'s
Three-dimensional pore structure, relative to the randomness of natural coral sand hole gap, in order, big aperture is wrong for modified coral sand pore structure
Fall to have cause, for seawater cleaning processing, adsorption storage effect is good, and impurity abjection is also allowed for during follow-up backwash.
It is preferred that, the mass fraction of the order mesoporous medium of magnetic is 0.5-1.2%, diatomaceous mass fraction in modifying agent
For 2-2.5%, bentonite mass fraction is 0.8-1.6%.
It is preferred that, the mass fraction of the order mesoporous medium of magnetic is 0.0% in modifying agent, and diatomaceous mass fraction is
2.2%, bentonite mass fraction is 1.0%.
It is preferred that, the order mesoporous medium of magnetic is magnetic ordered mesoporous carbon and/or the order mesoporous nickel ferrite based magnetic loaded of magnetic.
It is preferred that, the order mesoporous medium of magnetic is that magnetic ordered mesoporous carbon and the order mesoporous nickel ferrite based magnetic loaded of magnetic press quality
Than 2:1 mixture.
The beneficial effects of the invention are as follows：The present invention forms uniform dispersion using three kinds of raw materials are well mixed, is used for
In the modification of coral sand, impregnation process, into the hole of coral sand, macropore is formed（Coral sand）Inner sleeve aperture（Magnetic is orderly
Mesoporous carbon or the order mesoporous nickel ferrite based magnetic loaded of magnetic）Three-dimensional pore structure, it is modified relative to the randomness of natural coral sand hole gap
Coral sand pore structure in order, big aperture is in picturesque disorder, and for seawater cleaning processing, adsorption storage effect is good, follow-up recoil
Impurity abjection is also allowed for when washing.
Embodiment
Below by specific embodiment, technical scheme is described in further detail.
Embodiment 1：
Modified coral sand is used for the method for Zhoushan engineering on an island Water warfare, the island coastal waters Organic substance in water, microorganism, thin
The polluter such as bacterium, algae content is high, takes two groups of 20ml coastal seawater centrifuges, centrifugal condition 4500rpm, 1min,
Centrifugation finishes removal supernatant, and residual solid content is weighed, and average solid content is 1.8mg/20ml,
（1）Pretreatment：Nearly seawater is led to cistern, adds the water-insoluble glucan for storing the mass of seawater cumulative volume 1%, fills
Divide and stir, 8h is settled in normal temperature natural flocculation；
The pretreated coastal seawater centrifuges of two groups of 20ml are taken again, and centrifugal condition 4500rpm, 1min have been centrifuged
Finish and remove supernatant, residual solid content is weighed, average solid content is 0.8mg/20ml,
（2）Purification：Step（1）Pretreated coastal seawater is pumped into filtration tank, the filtration tank and is filled with modified coral sand
Filler, pretreated coastal seawater is purified through the filling adsorption in filtration tank, fully goes the removal of impurity, obtains Island engineering
Use purified water；
The processing method of the modified coral sand filler is as follows：
（a）Coral sand is crushed, particle size range 0.6mm coral sand is chosen, removes visible foreign with seawater flushing, dry standby；
（b）Modifying agent is configured, the order mesoporous medium of magnetic, diatomite and organobentonite are well mixed, plus appropriate purified water
Stir, adjust pH value to 7.5 with sodium hydroxide, obtain modifying agent；
（c）By step（a）Coral sand input step（b）Modifying agent in modification, in stirring at normal temperature infiltrate 6 hours, leaching
Sodium hydroxide maintenance system pH value 7.5 is added during profit；
（d）Step（c）Coral sand after modification, in after 220 DEG C of high-temperature roasting 1h, is cooled to normal temperature, i.e. conduct through draining
Filler loads filtration tank；
In the present embodiment, step（b）The mass fraction of the order mesoporous medium of magnetic is 0.5% in modifying agent, diatomaceous quality point
Number is 2.5%, and bentonite mass fraction is 0.8%, and the order mesoporous medium of magnetic is magnetic ordered mesoporous carbon.
The coastal seawater centrifuge after two groups of 20ml purifications, centrifugal condition 4500rpm, 1min, centrifugation are taken again
Removal supernatant is finished, residual solid content is weighed, average solid content is 0.02mg/20ml, and impurity is removed thoroughly substantially.
Embodiment 2：
Modified coral sand is used for the method for Hainan engineering on an island Water warfare, the island coastal waters Organic substance in water, microorganism, thin
The polluter such as bacterium, algae content is high, takes two groups of 20ml coastal seawater centrifuges, centrifugal condition 4500rpm, 1min,
Centrifugation finishes removal supernatant, and residual solid content is weighed, and average solid content is 2.8mg/20ml,
（1）Pretreatment：Nearly seawater is led to cistern, adds the water-insoluble glucan for storing the mass of seawater cumulative volume 2.5%,
Stir, 6h is settled in normal temperature natural flocculation；
The pretreated coastal seawater centrifuges of two groups of 20ml are taken again, and centrifugal condition 4500rpm, 1min have been centrifuged
Finish and remove supernatant, residual solid content is weighed, average solid content is 1.5mg/20ml,
（2）Purification：Step（1）Pretreated coastal seawater is pumped into filtration tank, the filtration tank and is filled with modified coral sand
Filler, pretreated coastal seawater is purified through the filling adsorption in filtration tank, fully goes the removal of impurity, obtains Island engineering
Use purified water；
The processing method of the modified coral sand filler is as follows：
（a）Coral sand is crushed, particle size range 0.8mm coral sand is chosen, removes visible foreign with seawater flushing, dry standby；
（b）Modifying agent is configured, the order mesoporous medium of magnetic, diatomite and organobentonite are well mixed, plus appropriate purified water
Stir, adjust pH value to 7.8 with sodium hydroxide, obtain modifying agent；
（c）By step（a）Coral sand input step（b）Modifying agent in modification, in stirring at normal temperature infiltrate 4-6 hours,
Sodium hydroxide maintenance system pH value 7.8 is added in impregnation process；
（d）Step（c）Coral sand after modification, in after 220 DEG C of high-temperature roasting 0.5h, is cooled to normal temperature, that is, made through draining
Filtration tank is loaded for filler；
In the present embodiment, step（b）The mass fraction of the order mesoporous medium of magnetic is 1.2% in modifying agent, diatomaceous quality point
Number is 2%, and bentonite mass fraction is 0.8%, and the order mesoporous medium of magnetic is the order mesoporous nickel ferrite based magnetic loaded of magnetic.
The coastal seawater centrifuge after two groups of 20ml purifications, centrifugal condition 4500rpm, 1min, centrifugation are taken again
Removal supernatant is finished, residual solid content is weighed, average solid content is 0.05mg/20ml, and impurity is removed thoroughly substantially.
Embodiment 3：
Modified coral sand is used for the method for Qingdao engineering on an island Water warfare, the island coastal waters Organic substance in water, microorganism, thin
The polluter such as bacterium, algae content is high, takes two groups of 20ml coastal seawater centrifuges, centrifugal condition 4500rpm, 1min,
Centrifugation finishes removal supernatant, and residual solid content is weighed, and average solid content is 2.2mg/20ml,
（1）Pretreatment：Nearly seawater is led to cistern, adds the water-insoluble glucan for storing the mass of seawater cumulative volume 1.8%,
Stir, 7h is settled in normal temperature natural flocculation；
The pretreated coastal seawater centrifuges of two groups of 20ml are taken again, and centrifugal condition 4500rpm, 1min have been centrifuged
Finish and remove supernatant, residual solid content is weighed, average solid content is 1.0mg/20ml,
（2）Purification：Step（1）Pretreated coastal seawater is pumped into filtration tank, the filtration tank and is filled with modified coral sand
Filler, pretreated coastal seawater is purified through the filling adsorption in filtration tank, fully goes the removal of impurity, obtains Island engineering
Use purified water；
The processing method of the modified coral sand filler is as follows：
（a）Coral sand is crushed, particle size range 0.7mm coral sand is chosen, removes visible foreign with seawater flushing, dry standby；
（b）Modifying agent is configured, the order mesoporous medium of magnetic, diatomite and organobentonite are well mixed, plus appropriate purified water
Stir, adjust pH value to 7.6 with sodium hydroxide, obtain modifying agent；
（c）By step（a）Coral sand input step（b）Modifying agent in modification, in stirring at normal temperature infiltrate 4-6 hours,
Sodium hydroxide maintenance system pH value 7.6 is added in impregnation process；
（d）Step（c）Coral sand after modification, in after 250 DEG C of high-temperature roasting 0.5h, is cooled to normal temperature, that is, made through draining
Filtration tank is loaded for filler；
In the present embodiment, step（b）The mass fraction of the order mesoporous medium of magnetic is 0.8% in modifying agent, diatomaceous quality point
Number is 2.2%, and bentonite mass fraction is 1.0%, and the order mesoporous medium of magnetic is magnetic ordered mesoporous carbon and magnetic
Property order mesoporous nickel ferrite based magnetic loaded in mass ratio 2:1 mixture.
The coastal seawater centrifuge after two groups of 20ml purifications, centrifugal condition 4500rpm, 1min, centrifugation are taken again
Removal supernatant is finished, residual solid content is weighed, average solid content is 0.032mg/20ml, and impurity removes thorough substantially
Bottom.
Comparative example 1：
Embodiment 1 is led in basic operation, is a difference in that filler uses existing quartz sand；
The coastal seawater centrifuge after two groups of 20ml purifications is taken, centrifugal condition 4500rpm, 1min, centrifugation finish removal
Supernatant, weighs to residual solid content, and average solid content is 0.2mg/20ml, and impurity removal effect is nearlyer by 9 than the difference of embodiment 1
Times.
Comparative example 2：
Basic operation be the same as Example 2, is a difference in that filler uses natural coral sand.
The coastal seawater centrifuge after two groups of 20ml purifications is taken, centrifugal condition 4500rpm, 1min, centrifugation is finished
Supernatant is removed, residual solid content is weighed, average solid content is 0.8mg/20ml, and impurity removal effect is than embodiment 1
Nearly 15 times of difference.
Determine phosphate, TOC, ammonia nitrogen, the removal of turbidity in the coastal seawater after embodiment 1-3 and comparative example 1-2 purifications
Rate, result of the test shows：
Embodiment 1-3 average removal rate is as follows：Phosphate 94.8%, TOC 97.2%, ammonia nitrogen 98.3%, turbidity 99.6%；
The average removal rate of comparative example 1 is as follows：Phosphate 78.8%, TOC 87.2%, ammonia nitrogen 78.3%, turbidity 83.6%.
The average removal rate of comparative example 1 is as follows：Phosphate 75.2%, TOC 82.2%, ammonia nitrogen 75.3%, turbidity 84.0%.
Embodiment described above is a kind of preferably scheme of the present invention, not makees any formal to the present invention
Limitation, also has other variants and remodeling on the premise of without departing from the technical scheme described in claim.
Claims (5)
1. being modified coral sand is used for the method for Island engineering Water warfare, it is characterised in that：Methods described step is as follows：
（1）Pretreatment：Nearly seawater is led to cistern, and the water-insoluble Portugal that addition stores seawater cumulative volume 1-2.5% mass gathers
Sugar, is stirred, and 6-8h is settled in normal temperature natural flocculation；
（2）Purification：Step（1）Pretreated coastal seawater is pumped into filtration tank, the filtration tank and is filled with modified coral sand
Filler, pretreated coastal seawater is purified through the filling adsorption in filtration tank, fully goes the removal of impurity, obtains Island engineering
Use purified water；
The processing method of the modified coral sand filler is as follows：
（a）Coral sand is crushed, particle size range 0.6-0.8mm coral sand is chosen, removes visible foreign with seawater flushing, dry standby
With；
（b）Modifying agent is configured, the order mesoporous medium of magnetic, diatomite and organobentonite are well mixed, plus appropriate purified water
Stir, adjust pH value to 7.5-7.8 with sodium hydroxide, obtain modifying agent；
（c）By step（a）Coral sand input step（b）Modifying agent in modification, in stirring at normal temperature infiltrate 4-6 hours,
Sodium hydroxide maintenance system pH value 7.5-7.8 is added in impregnation process；
（d）Step（c）Coral sand after modification is normal in after 220-280 DEG C of high-temperature roasting 0.5-1h, being cooled to through draining
Temperature, i.e., load filtration tank as filler.
2. modified coral sand according to claim 1 is used for the method for Island engineering Water warfare, it is characterised in that：
The mass fraction of the order mesoporous medium of magnetic is 0.5-1.2% in modifying agent, and diatomaceous mass fraction is 2-2.5%, organic bentonite
The mass fraction of profit soil is 0.8-1.6%.
3. modified coral sand according to claim 2 is used for the method for Island engineering Water warfare, it is characterised in that：
The mass fraction of the order mesoporous medium of magnetic is 0.0% in modifying agent, and diatomaceous mass fraction is 2.2%, bentonite
Mass fraction is 1.0%.
4. the modification coral sand according to Claims 2 or 3 is used for the method for Island engineering Water warfare, its feature exists
In：The order mesoporous medium of magnetic is magnetic ordered mesoporous carbon and/or the order mesoporous nickel ferrite based magnetic loaded of magnetic.
5. modified coral sand according to claim 4 is used for the method for Island engineering Water warfare, it is characterised in that：
The order mesoporous medium of magnetic is magnetic ordered mesoporous carbon and the order mesoporous nickel ferrite based magnetic loaded of magnetic in mass ratio 2:1 mixture.
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| CN108545995A (en) * | 2018-05-04 | 2018-09-18 | 国家海洋局第二海洋研究所 | The method that processing mudflat sludge prepares bionical ecological architectural material |
| CN114409034A (en) * | 2022-01-18 | 2022-04-29 | 中国水利水电科学研究院 | Modified water-permeable coral sand and preparation method and application thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CZ2011502A3 (en) * | 2011-08-16 | 2013-04-10 | Vysoká skola chemicko-technologická v Praze | Adsorbents for removing arsenic and selenium from water |
| CN106000360A (en) * | 2016-07-12 | 2016-10-12 | 佛山杰致信息科技有限公司 | Sewage adsorbing nanocomposite material |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CZ2011502A3 (en) * | 2011-08-16 | 2013-04-10 | Vysoká skola chemicko-technologická v Praze | Adsorbents for removing arsenic and selenium from water |
| CN106000360A (en) * | 2016-07-12 | 2016-10-12 | 佛山杰致信息科技有限公司 | Sewage adsorbing nanocomposite material |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108545995A (en) * | 2018-05-04 | 2018-09-18 | 国家海洋局第二海洋研究所 | The method that processing mudflat sludge prepares bionical ecological architectural material |
| CN114409034A (en) * | 2022-01-18 | 2022-04-29 | 中国水利水电科学研究院 | Modified water-permeable coral sand and preparation method and application thereof |
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